Folder for sewing-machines.



A. LAUBSGHER.

FOLDER FQR'SEWING MACHINES. AYPLIOATION FILED MARA, 1910.

1 ,005,238, Patented .0013. 10, 1911.

Arm/MH UNITED sTATEs PATENT oEEioE.

ALEXANDER LAUBSCHER,.OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THE SNGER MANFACTURING COMPANY, A CORPORATION OF NEW JERSEY.

FOLDER FOR SEWING-MACHINES.

l Specification of Letters Patent.

ratenteaoet. 1o, i911.

Application led March 4, 1910. Serial No. 547,261.

' in Folders for Sewing-Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to improvements in folders for sewing machines, and has for its object to improve that class oi' devices com-A mercially termed shirt front folders.

ln the manufacture of mens shirts it is the common practice to provide a box plait in which the buttonholes for closing thev bosom portion of the shirt are formed, and it is desirable that such plait be provided with a 'reinforcing strip and that the superposed plies of material will be so arranged that no edge of a single ply will be exposed on either side of the finished product and in a manner to expose the folds of both the body fabric and lining strip at the free or biittonhole edge ot' the box plait.; and to this end there is provided a combination of plait-folder, edge-folder and strip-folding giiide, the latter two of which are 'adjustably secured to the bed-plate of the sewing machine, the former being attached to a swinging carrier depending from the free end of the overhanging arm.

rlhe sewing machine may be of any suitable construction, one form of which is shown in the drawings, but need not be specifically described herein since it is well understood, and as the parts ai'e very similar in all sewing machines employing a vertically-actuated needle-bar, the, invention can be attached to any of them with little or no change.

In the accompanying drawings illustrating the invention, in the several iigures of which like parts are similarly designated, Figure 1 is a perspective View of a sewing machine fitted with the improved mechanism, the latter being shown adjusted into operative relationship with the stitch-forming mechanism, Fig, 2 a like view showing the relationship of the superposed plies of material as they leave the delivery ends of the folders, Fig. 3 vis a rear side view of the swinging lever, the bracket upon which said lever is pivoted, together with the catchlever for holding said swinging lever in effeet-ive position, and Fig. 4 is a View in section on the line w .fr Fig. 1.

1 represents the bed-plate of t-he sewing machine, in which are mounted suitablyactuated loop-takers and the cloth-feeding mechanism, the latter of which is not shown.

2 is the overhanging arm or arm bracket in the free, end 3 of which is mounted the needle-carrying bar 4 operatively connected with its driving shaft (not shown), which latter is mounted in the usual bearings formed in said arm bracket.

5 represents one form or' commonly-einployed cloth-presser secured by a suitable screw to the presser-carrying bar 6 which, in turn, is mounted in the free end of said bracket in a manner common to sewing machines generally.

7 is the throat-plate, 8, 8 the needles, and 9 the needle bracket suitably secured to the lower end of the needle-carrying bar 4.

10 represents an attachment base which is secured at one end,vby pivot screw 11, to the bed-plate 1 and yieldingly held down upon said bed-plate by a spring 12 encircling said pivot screw, said base being provided at its opposite end with a commonlyemployed downwardly-extended dog pin 12 which coacts with a suitable opening (not shown) in the bed-plate to hold said base andthe parts carried by it against rotary adjustment on said pivot screw, except at the convenience of the operator.

13 represents a. strip-folding guide carried by a bracket 14 which is adjustably secured by screws 15, 15 to the upper side of the base 10, and 1G is an edge-folder carried by an arm 17 which is adjustably secured to said base by screws 18, 18.

19 represents a swinging carrier pivoted 'at its upper end to a bracket 20 which is adjustabl y secured by screws 21, 21 to the tree end oit the arm bracket, the lower end of said carrier being provided with an adjustably secured plait-folder 22 which may be secured in or out et' operative relationship with said edge-folder and strip-folding guide, as will now be explained.

To the carrier 19 is pivoted at 23 a catchlever, 24, and interposed lbetween the lower end of said lever and said carrier is a spring 25 which acts to hold the oppositeend of said lever pressed toward the rounded p0rtion 26 oi the bracket 20 provided with the.

.. an intermediately located .the carrier 19 carrying the attached plaitfolder 22, as the relationship of the notches 27 and 28 with respect to 4the upper end of the catch lever 24: fully discloses convenient means for effecting such adjustments.

Theoperation of the devicel is as follows:

Supposing the plait-folder 22 to be adjusted to its outward. or inoperative position, the strip 32 Ais passed through the folding scroll 33 of the strip-folding guide 13, the free vedge 34 of the main or body portion of the material 35-is positioned in the folding scroll 36 of the edge-folder 16, and the plait-folder is adjusted to its operative osition, as shown in Fig. 1,` which causes t e'fold 37 to be formed in said main or body portion and the several plies ofmaterial to be superposed as they are advanced to the action of the stitchforming mechanism, as shown in Fig. 2.

1. In a folder for sewing machines, the combination of an'edge-folder, an adjustablyl mounted plait-folder, an intermediately located strip-folding guide, and means `for securing said plait-folder in operative relationship with said edge-folder and stripfolding guide for effecting a box plaitV having at one side an exposed division of the superposed fabrics. j

2. In a folder for sewingmachines, the combination of an edge-folder, a plait-folder, strip -f folding guide,.fand ymeans for adjusting said edgefolder and strip-folding guide relatively to each votherandto said plait-folder for effecting a box plait having at one side an exposed division of the superposed fabrics.

3, In a folder for sewing machines, the combination of an edge-folder carried by the bed-plate4 of the sewing machine, an adjustably secured plait-folder dependingv from the free end of the sewing machine arm bracket, and a strip-folding guide carried by said bed-plate and located between said edge-folder and plait-folder for effecting a box plait having at one side an exposed; division of the superposed fabrics.

.4. In a folder for sewing machines, the combination of an attachment base adjustably mounted on the bed-plate of the sewing machine, an ed e-folder provided with l an arm for adjusta ly securing said folder to said base, a strip-folding. guide carried by said base and locatedin vertical alinement vwithfsaid edge-folder, and a swin ing carri'er depending from the sewing mae ine arm bracket and carrying at its free end a plaitfolder for effecting a box plait having at one side, an exposed division of the superposed fabrics. A

5. In a folder for sewin machines, the combination of an edge-fol er, a strip-folding guide and a plait-folder arranged in vertical superposition; a swinging carrier pivotallyattached to a bracket secured to the' overhanging arm and to which 'said plaitfolder is adjustably attached; and a catch lever mounted on said arm and coacting with said bracket to hold said carrier and its attached folder in operative relationship with said edge-folder` and strip-folding guide for effecting a box plait having at one side an exposed division of the superposed fabrics.

6. In a folder for sewing machines, 'the following instrumentalities 1n combination: an attachment base carried bthe bed-plate of the sewing machine; ane ge-folder provided with an arm and a strip-folding guide provided with a bracket adj ustably mounted on said base; a bracket secured to the over hanging arm; a carrier pivotally mounted en said bracket and provided with a plaitfolder; and a spring-controlled catch lever pivoted upon said carrier and coacting with the bracket attached to the overhanging arm to hold. said plait-folder either in or out of operative relationship with said edge-folder and strip-folding guide for effecting abox plait having at one-side an exposed divlsion of the superposed fabrics.

In testimony whereof, I have signed my name to this' specification, in the presence of two subscribing witnesses.

ALEXANDER LAUBSCHER.

Witnesses:

THOMAS CAMPBELL, ABBIE M. DONIKEE. 

